#include <Stepper.h>

const int stepsPerRevolution = 200;
Stepper myStepper(stepsPerRevolution, 8, 9, 10, 11);

const int potPin = A0;
int previousStepCount = 0;

void setup() {
  myStepper.setSpeed(60);
}

void loop() {
  int potValue = analogRead(potPin);
  int stepCount = map(potValue, 0, 1023, 0, stepsPerRevolution);

  if (stepCount != previousStepCount) {
    int stepsToMove = stepCount - previousStepCount;
    myStepper.step(stepsToMove);
    previousStepCount = stepCount;
  }
  
  delay(10);
}